In 2016, Hulk Comics was reborn as Harley Comics. While it still builds on the original comic, it changed in significant ways, like giving every character fully original designs. The humor has also changed quite a bit, to a cleaner and more compassionate one. Story-wise, this comic enters a parallel universe, where everything that happened in the old comic still happened but it might have happened differently in this world. As such, I wouldn't say Hulk Comics is a required reading, but it helps explain small things.